MCP Integration

Connect ClickHouse to Claude Code

Query your ClickHouse data directly from Claude Code using Sequel’s MCP server. Ask questions in plain English — no SQL, no dashboards, no context switching.

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How it works

Three steps to get started

Connect ClickHouse to Sequel

In your Sequel dashboard, go to Connections and add ClickHouse. Sequel handles authentication and schema discovery automatically.

Add the MCP config

Copy the Sequel MCP configuration into Claude Code's settings file (shown below). Swap in your API key from Settings → API Keys.

Ask Claude Code about your data

Restart Claude Code and start asking questions. "How many events did we receive per hour yesterday?" — and get a real answer backed by live ClickHouse data.

Configuration

Add Sequel to Claude Code

Place this in claude mcp add (CLI) and replace sql_your_api_key with a key from Settings → API Keys.

claude mcp add (CLI)

claude mcp add sequel \
  --transport http \
  https://api.sequel.sh/mcp \
  --header "Authorization: Bearer sql_your_api_key"

Example prompts

Questions you can ask Claude Code

“How many events did we receive per hour yesterday?”

“What's the funnel conversion rate from signup to first purchase?”

“Show me the top 10 users by event count this week”

“Which event types have increased most in the last 7 days?”

“What's the day-1 retention rate for users who signed up last month?”

“Show me error events grouped by type for the past 24 hours”

“What's the average time between first and second order?”

“Which pages have the highest drop-off in my onboarding flow?”

Frequently asked questions

How do I connect ClickHouse to Claude Code?

You need two things: (1) connect ClickHouse to Sequel in your Sequel dashboard under Connections, and (2) add the Sequel MCP config to Claude Code using the setup shown above. Once both are done, Claude Code can query your ClickHouse data directly.

What ClickHouse data can Claude Code access?

Claude Code can access any data available through your ClickHouse connection in Sequel. Use Sequel's search tool to discover available metrics and dimensions, then execute queries to pull the data you need.

Is my ClickHouse data sent to Claude Code's servers?

Query results are returned to Claude Code as context within your conversation. Only the data you explicitly ask about is retrieved. Sequel never stores your query results permanently — they exist only for the duration of the tool call.

Do I need a Sequel account?

Yes. You need a Sequel account to connect ClickHouse and generate an API key. Sign up free at sequel.sh — no credit card required. Then create a connection to ClickHouse and generate an API key from Settings → API Keys.

Can I connect multiple ClickHouse accounts?

Yes. Sequel supports multiple connections of the same type. If you have multiple ClickHouse accounts or properties, add each as a separate connection in Sequel. Claude Code will be able to query all of them.

Connect ClickHouse to other AI tools

ClickHouse → Claude ClickHouse → Cursor ClickHouse → ChatGPT ClickHouse → VS Code ClickHouse → Windsurf ClickHouse → Zed ClickHouse → Gemini ClickHouse → Codex

Connect other sources to Claude Code

Google Analytics

Google Search Console

Connect ClickHouse to Claude Code today

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